Nielsen Hayden genealogy
Ancestors of Mary Fitz Marmaduke
- Aft 1318 ┌── Marmaduke Fitz Geoffrey (of Horden, Durham, England - ??)
┌── John fitz Marmaduke (of Horden, Durham, England -
│ Bef 16 Aug 1311 bur.Durham Cathedral, Durham, Durham, England)
│ Bef 16 Aug 1311 bur.Durham Cathedral, Durham, Durham, England)
Mary Fitz Marmaduke ( - Aft 1318)
│ ┌── Robert de Brus (of Annandale, Dumfriesshire, Scotland -
│ │ 1221 bur.Guisborough Priory, Yorkshire, England) =>
│ │ 1221 bur.Guisborough Priory, Yorkshire, England) =>
│ ┌── Robert de Brus (Abt 1220 of Annandale, Dumfriesshire, Scotland -
│ │ 31 Mar 1295 Lochmaben Castle, Dumfriesshire, Scotland)(m. May 1240)
│ │ 31 Mar 1295 Lochmaben Castle, Dumfriesshire, Scotland)(m. May 1240)
│ │ └── Isabel of Huntingdon ( - Bef 20 Mar 1252 bur.Sawtrey Abbey, Huntingdonshire, England) =>
│ │
└── Isabel de Brus ( - ?? bur.Easington, Durham, England)
│
│ ┌── Gilbert de Clare (Abt 1180 - 25 Oct 1230 Penrose, Brittany, France)(m. 9 Oct 1217) =>
└── Isabel de Clare (2 Nov 1226 - Aft 10 Jul 1264)(m. May 1240)
└── Isabel Marshal (9 Oct 1200 Pembroke, Pembrokeshire, Wales -
17 Jan 1240 Berkhamsted, Hertfordshire, England)(m. 9 Oct 1217) =>
17 Jan 1240 Berkhamsted, Hertfordshire, England)(m. 9 Oct 1217) =>